From patchwork Mon Feb 27 03:28:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Xiubo Li X-Patchwork-Id: 657169 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 113B2C64ED6 for ; Mon, 27 Feb 2023 03:40:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230261AbjB0DkL (ORCPT ); Sun, 26 Feb 2023 22:40:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49786 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231166AbjB0Dj6 (ORCPT ); Sun, 26 Feb 2023 22:39:58 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AFB0918AB0 for ; Sun, 26 Feb 2023 19:39:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1677469149; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yk/BsT+2tseNLFTXvjlY32g1kYPKH3UafyDua0aw31E=; b=FEev0Wbss0VLVAeWlOew55EJUvonCBZ9y3gdq7KHIAN0T1O4KZ7hEX/1TkAzmY4O4iz7ZZ qp1+jXpIjqs8Jjk83DP4ZFqwKoB/Ezfpc1fNrq3zYNrDCJqAdAZp34VlW3Q+Xu3ctYqiB+ 6hfKr1r16nXKNlifupU7FwFCcAdxclg= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-447-HGkr9-xENz6aW2xONqnPfg-1; Sun, 26 Feb 2023 22:31:52 -0500 X-MC-Unique: HGkr9-xENz6aW2xONqnPfg-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 74B38380670B; Mon, 27 Feb 2023 03:31:52 +0000 (UTC) Received: from lxbceph1.gsslab.pek2.redhat.com (unknown [10.72.47.117]) by smtp.corp.redhat.com (Postfix) with ESMTP id A5D511731B; Mon, 27 Feb 2023 03:31:49 +0000 (UTC) From: xiubli@redhat.com To: idryomov@gmail.com, ceph-devel@vger.kernel.org Cc: jlayton@kernel.org, lhenriques@suse.de, vshankar@redhat.com, mchangir@redhat.com, Xiubo Li Subject: [PATCH v16 61/68] ceph: invalidate pages when doing direct/sync writes Date: Mon, 27 Feb 2023 11:28:06 +0800 Message-Id: <20230227032813.337906-62-xiubli@redhat.com> In-Reply-To: <20230227032813.337906-1-xiubli@redhat.com> References: <20230227032813.337906-1-xiubli@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: ceph-devel@vger.kernel.org From: Luís Henriques When doing a direct/sync write, we need to invalidate the page cache in the range being written to. If we don't do this, the cache will include invalid data as we just did a write that avoided the page cache. In the event that invalidation fails, just ignore the error. That likely just means that we raced with another task doing a buffered write, in which case we want to leave the page intact anyway. [ jlayton: minor comment update ] Signed-off-by: Luís Henriques Reviewed-by: Xiubo Li Signed-off-by: Jeff Layton --- fs/ceph/file.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/fs/ceph/file.c b/fs/ceph/file.c index c1f75e78f921..dee3b445f415 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -1636,11 +1636,6 @@ ceph_sync_write(struct kiocb *iocb, struct iov_iter *from, loff_t pos, return ret; ceph_fscache_invalidate(inode, false); - ret = invalidate_inode_pages2_range(inode->i_mapping, - pos >> PAGE_SHIFT, - (pos + count - 1) >> PAGE_SHIFT); - if (ret < 0) - dout("invalidate_inode_pages2_range returned %d\n", ret); while ((len = iov_iter_count(from)) > 0) { size_t left; @@ -1966,6 +1961,20 @@ ceph_sync_write(struct kiocb *iocb, struct iov_iter *from, loff_t pos, } ceph_clear_error_write(ci); + + /* + * We successfully wrote to a range of the file. Declare + * that region of the pagecache invalid. + */ + ret = invalidate_inode_pages2_range( + inode->i_mapping, + pos >> PAGE_SHIFT, + (pos + len - 1) >> PAGE_SHIFT); + if (ret < 0) { + dout("invalidate_inode_pages2_range returned %d\n", + ret); + ret = 0; + } pos += len; written += len; dout("sync_write written %d\n", written);